Perhaps you should try some spelling variations:
sediment structure » sedimentary structures, document structure, argument structure
structure analysis » structural analysis
gases analysis » gas analysis
life sediment » like sediments, slide sediment, lake sediment
segment gases » segment cases, segment biases, segment based
line segment » line segments

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( life sediment structure analysis ) OR ( line segment gases analysis )).
• Adding a wildcard symbol may retrieve word variants: (( life sediment structure analysis ) or ( line segment gases analysis ))*.